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US Patent: 802,470
Measuring Instrument Designed to Ascertain the Depth of Recesses or Cavities Formed in Solid Bodies
Patentee:
Maurice Picard (exact or similar names) - La Chaux-de-Fonds, Neuchâtel Canton, Switzerland

USPTO Classifications:
33/83

Tool Categories:
metalworking tools : machinist tools : depth gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jan. 28, 1905
Granted: Oct. 24, 1905

Patent Pictures:
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